Dear all,

in our case, the switch from OpenSSL to GnuTLS was surprisingly easy. Here you 
have the details: 
https://github.com/gnss-sdr/gnss-sdr/commit/18545077d84c02fe77b2a257a06f6d4456a1359f
 
<https://github.com/gnss-sdr/gnss-sdr/commit/18545077d84c02fe77b2a257a06f6d4456a1359f>

GnuTLS provides the gnutls-openssl library, which is a partial implementation 
of OpenSSL. The library is provided by the libgnutls28-dev package. This 
compatibility layer is not complete and it is not intended to completely 
re-implement the OpenSSL API with GnuTLS (it only provides limited source-level 
compatibility), but it was enough for us.

Although our case was straightforward and we didn’t find any special obstacle, 
I expect this could serve as a basis for other people switching from OpenSSL to 
GnuTLS.

Best regards,
Carles





> El 15/9/2015, a las 2:00, Ben Finney <ben+deb...@benfinney.id.au> escribió:
> 
> Carles Fernandez <carles.fernan...@cttc.es> writes:
> 
>> thanks for your clarifications. We will opt for reimplementing our
>> code using GnuTLS.
> 
> Please write something about that process online, either during or soon
> afterward, if you can!
> 
> Re-implementing in GnuTLS makes the licensing situation for a
> copyleft-licensed work much simpler, so we would like to be able to
> recommend that path more often.
> 
> It would be good for future reference to know how much effort it is to
> change the code, and what specific obstacles are actually encountered.
> 
> --
> \      “Anyone who believes exponential growth can go on forever in a |
>  `\        finite world is either a madman or an economist.” —Kenneth |
> _o__)                                                         Boulding |
> Ben Finney
> 

--
------------------------------------------------------------
Dr. Carles Fernández Prades
Head of the Communication Systems Division
Senior Researcher

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Address: Parc Mediterrani de la Tecnologia
      Av. Carl Friedrich Gauss, 7
      08860 Castelldefels, Barcelona, Spain.
Phone: +34 936452909    Fax: +34 936452901
http://www.cttc.es/people/cfernandez/ <http://www.cttc.cat/>
------------------------------------------------------------



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